[S390] remove superfluous TIF_USEDFPU bit

The TIF_USEDFPU bit is always 0 for s390 and it is not tested anywhere.
Remove the bit. At the same time remove the calls to clear_used_math()
as well. The PF_USED_MATH bit is never set for s390 either.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2 files changed, 0 insertions, 8 deletions

diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index b98fe8e6e507..00b6d1d292f2 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -153,8 +153,6 @@ void exit_thread(void)
 
 void flush_thread(void)
 {
-        clear_used_math();
-        clear_tsk_thread_flag(current, TIF_USEDFPU);
 }
 
 void release_thread(struct task_struct *dead_task)
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 0663287fa1b3..2148ad3d490d 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -124,12 +124,6 @@ void __cpuinit cpu_init(void)
          */
         get_cpu_id(&S390_lowcore.cpu_id);
 
-        /*
-         * Force FPU initialization:
-         */
-        clear_thread_flag(TIF_USEDFPU);
-        clear_used_math();
-
         atomic_inc(&init_mm.mm_count);
         current->active_mm = &init_mm;
         BUG_ON(current->mm);